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日本苹果黑星病的发生是四十年代后期被确认下来,至六十年代前期仅限在北海道。因果品、苗木和接穗等自由往来,黑星病向本州传播只是时间问题。1967年在岩手县发现,相继在东北各县都有发现。发病初期,对本州的黑星病发生生态还不清楚,防治措施也不完善。现在基本的防治措施已经确定,危害逐渐减少,曾被认为是难治之症的病害,现在栽培者已认识到只要加以防治,此病并非那么难治。秋田县发生黑星病至今约有10年历史,本文就该县以前黑星病发生的状况和现在采取的措施加以介绍。
The occurrence of Japanese apple scab was confirmed in the late 1940s and only in Hokkaido by the early 1960s. It is only a matter of time before Scabs spread to the state because of the free exchange of fruit, seedlings and scions. Found in 1967 in Iwate Prefecture, one after another found in all counties in the Northeast. Early onset, the ecology of the state of Scab was not yet clear, prevention and control measures are not perfect. Now that basic prevention and control measures have been established and the harm has been gradually reduced, it has been considered as a disease of refractory disease. Now the cultivators have realized that the disease is not so difficult to cure if it is to be controlled. The occurrence of scab in Akita Prefecture is about 10 years old. This article describes the status of the scab and the measures taken now in this county.